Carriage positioning mechanism



Aprll 3, 1951 c. w. CRUMRINE CARRIAGE POSITIONING MECHANISM 2Sheets-Sheet l Fi,led Dec. 15, 1947 Www INVENTOR fW'fl/ME/NE ATTORNEYPatented Apr. 3, 1951 .UNITED STATES PATENT OFFICE CARRIAGE POSITIONINGMECHANISM Chester W. Crumrine, Rochester, N. Y., assignor toInternational Business Machines Corporation, New York, N. Y., acorporation of New York Application December 13, 1947, Serial No.791,500

' 10 clai s.- (01. 197-179) 1 This invention relates and the-like.

The principal object of the present invention is to provide an improved'means of setting carriage controlling position stops, such as columnstops. or marginal stops.

An object is to provide a stop setting mechanism which enables thecolumn stops to be set up in certain combinations which are requiredwhen multi-column forms, such as invoices and the like, are to be typed.

An object is to provide a stop setting mechanism which may be operatedto set up a plurality 'of column stops at atime that has provisions forselecting the column stops which are to be set.

Other objects of the invention will be pointed out in the followingdescription and claims and illustrated in the accompanying drawings,which disclose, by way of example, the principle of the invention andthe best mode, which has been contemplated, of applying that principle..f .In the drawings:

-- setting mechanism in various selective positions.

Fig. 3 is a vertical section on the line 3-3 in Fig. l and shows thestop setting member in neutral position.

Fig. 4 is a view similar to Fig. 3 showing the stop setting member instop setting position.

Fig. 5 is a view similar to Fig. 3 but showing the stop setting memberin stop restoring position. The invention may be applied to anyconventional column stop mechanism in which a plurality of column stopsare provided, one for each space position of a typewriter carriage andselectively set from an inactive to an active position to determinecolumnar stopping positions or marginal positions of the carriage. Insome machines the column stops are supported by the carriage and movedrelative to a central counter stop when the carriage is set in thedesired columnar position. In other machines the column stops aresupported on the main frame work and the counter stop which coacts withthe counter stops is carried by the carriage. The present invention issuitable for use in either of these types. I In the drawings the stopbar It] may be of the general type disclosed in Patent 2,157,053 inwhich a series of individual column stops ll, one for ,each spaceposition of the typewriter carriage,

may be rocked from an inactive position, as indicated by the restoredstop II in Fig. 5, to a poto typewriting machines 'ited amount in thebearings l5 and I6.

sition in which the stop portion Ila is vertical as in Figs. 3 and 4.The stops are pivotally supported on a rod l2 which is secured in alongitudinal slot formed in the bar It! and the latter is transverselyslotted along both its front and rear edges to guide the column stops IIand space them apart.

The column stops l l are formed with tail pieces lib which cooperatewith the prongs of a comb spring it to hold the stops in either theirinactive position as in Fig. 5 in which the tail piece llb pointsstraight downwardly or in their set position as in Figs. 3 and 4. Thestop portions Ila when set as in Figs. 3 and 4 cooperate with a suitablecounter stop, as disclosed in the aforesaid patent, to determine variouscolumnar positions of the carriage.

Separate means, not shown, may be provided for setting and restoring thestops individually when necessary, according to the teachings of theaforesaid patent. This part of the mechanism, however, is of noimportance herein and is not disclosed.

It will be understood that in the present case the stop bar I!) issupported in the carriage but in other situations it might be supportedon the rear of the stop bar 10 and parallel therewith.

This setting mechanism includes a shaft I4 which extends parallel withthe bar l0 and is rotatably slidably mounted in the bearings l5, 16which may be suitably mounted in the carriage in' the present case.shaft 14 has a setting knob I! by means of which the shaft may berotated or moved axially a lim- Fixed to the shaft [4 is a flangedmember l8 which is folded around the shaft 14 (Figs. 3 to 5) and securedthereto. The member I8 is formed with a resetting flange l8a and asetting flange [8b and the resetting flange l8a is l0l'lg enough toextend over the top edges of all the lugs llc formed as extensions ofthe stops II.

By rotating shaft i l in a clockwise direction by means of the knob I!from the position of Fig. 3 tothe position of Fig. 5, the resettingflange 18a will engage and rock all of the set stops II counterclockwiseback to the position of Fig. 5 in which the stop portions Ha are out ofcooperation with the usual counter stop (not shown). This operation maybe effected in any position of the shaft M.

At its left-hand end (Fig. 1) the It will be noted by reference to Fig.1 that the setting flange [8b is provided with a plurality of pairs ofsetting lugs designated I80, I8d, l8e, there being two of these lugs foreach of these designations and the lugs which are correspondinglydesignated are symmetrically located with respect to the center line ofthe machine. It will be understood that this is purely an illustrativesetup as the lugs may be placed in any desired positions depending uponwhere it is desired column stops may be set to accommodate a specificgroup of forms.

Certain of the column stops I I have longer lugs llc than the others andtheselon'ger lugs are designated lld. With theshaftl l in theposition ofFig. 1 it is apparent that rotation thereof in a counterclockwisedirection (Fig. 3) to'the position of Fig. 4 will have no effect sincenone v of the setting lugs l8c,..l8d, l8e is in theplane of any of thelonger lugs lid. It is apparent, however, that if the shaft 141smoved'to the left 'iflFig. '1 it Will bringthe lugs I80 in the plane ofthe outer 'pairof longer lugs ll'd whereby rotation of the shaft M fromthe position of'Fig -S to the position of -Fig. 4 w'ills'e't'the twooutermo'st stops having the longer lugs Hd to the-operative position.The lugs i8c, i8d,'i8e areso disposed that oneincr'ement of rriovement'of the shaft M to the left in Fi'g. l-positions the outer- "inost pairof lugs 180 to set the outermost stops H having the longer lugs I Id.:An'other incr'emerit-of mo'vementof the shaft I4 will render the lugs13d operativewith respect to the inter-- -mediate pair ofstops ll, whilea third incremerit of movement will render the lugs l8"e effective toset the innermostpair of'stop's I I.

It is apparent that each'rotation of the sh'aft M in any one of thethree-selected positions sets a pair of stops II which, in theillustrative 'd-isclosure of-th'e invention, are spaced at intervals ofsix 'stops.

--It'will be understood, however, that the arrangement of the stopsshown in Fig.1is purely for the'purpose of illustrating the inventionand that -Witl'1in reasonable limits any' nurnber of stops fifa'Ybe'Setatatime 931d in anydesired grouping arrangement limited only byth'enecesstay for avoiding interference-of the lugs 18c,

18d; la'e with mgs' Hd which they are not sup- -'--posed to operate.

n; win be understood marine stopbar In will "desirable tomount lugs-I80, 18d, 18'eadjus't'ably on the flange I81), thus making it. necessaryonly f'toreplace the stop bar assembly when itis de- 'sired tosubstitute a different arrangement of "column stops H.

'- 'For the purpose of retainin' g the shaft 14in its 'longitudi-nallyselectively set positions, the "righthand bearing l6 (Figs. 1 and 2) is-provided with "'a vertical bore IG'a in which is retained a'ball l9coacting withany one or -'four-*circumferential j grooves I ia in theright-hand end of shaft M.

The upperend of the bore I611 is closed with a 1 set screw am a spring2! interposed between the set screw and the ball 19 yieltlingly forcesthe latter into a'groove 14d.

"For the purpose of retaining the shaft M in its normal position of Fig.3, there is provided-a "spring detent 22, the right-hand end '(Fig. 3)

being secured to the carriage rail 23. The spring- 4 detent 22 isprovided with a V-shaped portion 22a which yieldingly engages a roller24 carried by an arm 25 fixed to the member l8. The spring detent 22also is formed with two stop lugs 22b, 220 which limit clockwise andcounterclockwise movement, respectively, of the shaft 14 by coact 'ingwith roller 24 as shown in Figs. 4 and 5. Owing to thecamming action ofthe V-shaped portion 2211 on the roller 24 the arm 25 will always beforced back to the position of Fig. 3 when the knob I! is released aftermoving the member [8 to either of the'positions of Figs. 4 and 5.

While thereshavebeen shown and described "and pointedout the fundamentalnovel features a setting member extending parallel with said stopbariand' slidably mounted for. movement to any .one of a" plurality ofvstop. selecting positions and rotatably mounted to actuate the selectedstops toa'ctive positiom said setting member :hav-

ing a portion thereof-efiective, upon'rotationLof "said member 'in'a:direction opposite its-stop; ac-

tuating movement,to restore the set-stops-to inactive position.

'selective'axial movement of said member; said -me'mb'er bein rotatablymounted to engage. said extensions with the selected projections tothereby actuate selected stops to active positiomsaid member havingiaportion thereof effective, upon rotation of said member in a directionopposite -the stop 'actuating movement, to restore the set stopsto'inactive position.

"3.- In combination, a stop bar having a row of column stops pivotallymounted thereon for forward rotation from an inactivepo'sition to anactive position, certain of said stops'having projections,"and'a settingmember haVillg ai; least one setting extension and selectively movablelongitudinally to position said extension opposite a selected one ofsaid projections, said member also being 'rot'a'table in agiven'dire'c'tion to'e'fie'ct forward rotation of the stopassociated-with the selected projection, said memb'eihaving a portionthereof 'efiective upon reverse rotatio'n'of said member to restore theactively set stop.

4. In combination, a stop supportin -member having a series orcolumnstops grouped to represent a plurality of combination of :carriagestopping positions and movable from inactive -positions to activepositionsdeterminin different carriage positions, and a setting memberro't'atably mounted parallel'with said supporting' m'embe'r-and movableparallel with said supporting member;-said setting member beingprovidedawith a series -of rad-i'al extension which may be selecw tivelybrought into cooperation with difierent ones of said series of stops bydifferent extents of parallel movement of said setting member to set theselected stops to active position upon rotation of said setting member,said member being shaped so as to be eiiective upon rotation in adirection counter to its stop setting movement to restore the selectedsteps to inactive position.

5. In combination with a row of column stops, each settable from aninactive to a carriage stopping position, a setting member initiallymovable a preselected distance parallel with said row to select a stopand also movable at right angles to said initial movement to set theselected stop to carriage stopping position, said settin member beingalso shaped so as to be effective, when moved at right angles to saidselecting movement, to restore the selected stops.

6. In combination with a row of column stops each settable from aninactive to a carriage stopping position, a setting member movableparallel 'withsaid row variable distances to place said setting memberin setting relation to different ones of said stops, said settin memberalso being movable at right angles to its selecting movement to set theselected stops to carriage stopping position, said setting member havinga resetting portion effective upon movement of said member at rightangles to said selecting movement/to restore the selected stops.

7. In combination with a row or column stops, each pivotally mounted forrotation from an inactive to a carriage stopping position, a settingmember rotatably slidably mounted to enable an initial stop selectingmovement relative to said row and a final movement at right angles tosaid initial movement to rotate selected stops to carriage stoppingposition, said member being shaped soas to be effective, when movedreversely to said final movement, to restore the set stops.

8. In combination with a row of column stops, each movable from aninactive position to an active carriage stopping position, a settingmemher mounted movement parallel with said row to select any one of aplurality of said stops in different combinations and also movable atright angles to said selecting movement to set the selected stops toactive position, and also having a restoring portion effective uponmovement of said member transversely of said row to restore the activestops to inactive position.

9. In combination with a row of carriage position determining stops,each movable from an inactive position to a carriage stopping position,a setting member rotatably sliolably mounted on an axis parallel withsaid row and having a flange formed with a plurality of stop actuatingfingers disposed so that selective axial movements of said member locatesaid fingers in different stop setting positions whereby subsequentrotation of said member sets different selected stops to carriagestopping position.

10. In combination with row of carriage posi'ion determining stops, eachmovable from an inactive position to a carriage stopping position, a seting member rotatably slidabl mounted on an axis parallel with said rowand having a flange iormed with a plurality of stop actuating fingersdisposed so that selective axial m0vements of said member position saidfingers in different stop setting positions whereby subsequent rotationof said member sets different selected stops to carriage stoppingposition, said member also having a second flange operative, When saidmember is rotated reversely, to restore the set stops to inactiveposition.

CHESTER W. CRUMRINE.

REFERENCES CITED Ti lie following references are of record in the is ofthis patent:

UNITED STATES PATENTS Number Name Date 941,163 McLaughlin Nov. 23, 19091,429,341 Grutzmann Sept. 19, 1922 2,111,852 Koca Mar. 22, 1938

